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Sabtu, 21 Juli 2012

Just took apart a Kenwood KD-600 quartz phase locked direct drive turntable, It is a well built turntable, except for a weakness in the choice of a fibre board for the base cover which wear out with age.

The electronics are still in good condition. The motor turns nicely. But the speed at 33 RPM cannot be locked.

This is an early 1990s digital camera made by Obrite, a relatively unknown brand. Consumer electronics has became a commodity such that anyone with enough cash can get a electronics contract manufacturer to make any thing they like and stick their own brand on it.

This camera is about 1 Mega pixels organised as 640 x 360 pixels. It has a USB connection and needs 2 AA size battery for operation. When connected to the PC using the USB it doubles up as a web cam.

Kamis, 12 Juli 2012

A Made In Singapore AC low voltage power transformer. This is typical of the early industrialisation SME manufacturing in Singapore in the 1970s and 1980s. These transformers are probably made for local consumption in the building industry, the local factories and offices powering equipment like PA system, fire alarms, smoke detectors etc.

This transformer meets just basic electrical safety standards. The AC high voltage 230VAC winding is wound on the same bobbin as the low voltage AC and is insulated from it by heavy wax paper. Tighter safety regulations like UL electrical standards will requires the two windings to be separated on different halves of the plastic bobbin.

I have decided to srape it and recover the copper and iron. This produces about 300 grams of copper wire and almost 700 grams of scrap iron.

I recover about 300 grams of scrap copper wire from this ac transformer.

Rabu, 12 Oktober 2011

What you have always wanted to know about what is inside the Panasonic TV Camera Model WV-71. This is Made In Japan, use a TV camera tube not a CCD device. Has video over DC connection, thus saving one extra power cable. You just need a video cable to connect the camera to a video recording or TV screen. This is very useful considering that the camera is usually installed in remote locations far from the monitoring location.